This light measured 20 lux ont the MTBR Lux setup. In a laboratory environment with an integrating sphere, it measured at 209 actual lumens. This is excellent output for such a small light and is very close to its 250 lumen claims. It’s light output is basically on par with the more expensive Exposure Joystick which claims 325 lumens.

MTBR Actual Lumens and Lumen Hours Measurements:

Mtbr spent several days in a light laboratory facility and utilized ad $30k integrating sphere to measure some lights. The procedure is described in the video below. This is very revealing as most lights claim a certain ‘Lumen Output’ without actually measuring the actual lumen output. We are able to measure actual lumen output with this setup and the measurement for the Cateye Nano Shot is 209 lumens at the peak output.

Another excellent data point is the lumen-hour graph below. It shows exactly how the light behaves over its whole run time. A flat graph is good as it means the light output is constant over the its run and the user gets the same light outpu in hour one as in minute one of the light. It also shows how long the actual run time lasts under ‘high’ mode. The area inside the graph can be described as the total output of the light for one full battery charge.

The founder of mtbr and roadbikereview, Francis Cebedo believes that every cyclist has a lot to teach and a lot to learn. "Our websites are communal hubs for sharing cycling experiences, trading adventure stories, and passing along product information and opinions." Francis' favorite bike is the last bike he rode, whether it's a dirt jumper, singlespeed, trail bike, lugged commuter or ultralight carbon road steed. Indeed, Francis loves cycling in all its forms and is happiest when infecting others with that same passion. Francis also believes that IPA will save America.

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